Table of Contents
What does girdle mean on a diamond?
Girdle is the thin perimeter of a diamond, dividing the crown above from the pavilion below. When viewing a diamond in its setting or from a profile view, the girdle is the widest part (or the circumference) of the polished diamond – the portion of the stone that makes contact with the setting itself.
Do all diamonds have girdle reflection?
All round diamonds have some kind of girdle reflection, but it may be more or less clear. The purpose is simply to protect the diamond. A thicker girdle protects better than a very thin girdle. On the other hand, the reflection becomes more visible in a diamond with a thick girdle.
How important is girdle in oval diamond?
The girdle reduces the risk of damage on the diamond when jewelers work with it. A standard round diamond has 16 “valley” and 16 “hill” poistions, where the girdle rises and falls. Girdle thickness is reported as a range of thick to thin. Girdles can be rough (unpolished), polish (unfaceted) or polished and faceted.
What is the best girdle for oval diamond?
Oval Cut Diamond – Cut Quality Recommendations
| Excellent | Good | |
|---|---|---|
| Table % | 53-63 | 51 or 66-68 |
| Depth % | 58-62 | 53-55.9 or 66.1-71 |
| Girdle | Very Thin – Slightly Thick | Very Thin – Thick |
| Culet | None | Small |
What are diamond inclusions?
When diamonds are formed deep in the earth, they develop natural birthmarks – slight irregularities and features which are visible to a skilled grader under 10x magnification. These are collectively known as “clarity characteristics” or ‘“inclusions”. This is one of the reasons why a truly flawless diamond is so rare.
What is a good depth for a diamond?
between 62.9 and 59.5 percent
To find the depth percentage, divide the diamond’s physical depth measurement by its width. Also, depth is deemed acceptable within a certain range, with any value between 56.5 and 65 percent considered good. However, the ideal depth is between 62.9 and 59.5 percent.
Can a diamond be broken with a hammer?
As an example, you can scratch steel with a diamond, but you can easily shatter a diamond with a hammer. The diamond is hard, the hammer is strong. This makes the diamond incredibly hard and is why it is able to scratch any other material. Steel, on the other hand, has an ionic structure.
How do you calculate girdle thickness?
The calculation is: girdle thickness (mm) divided by the average diameter of the diamond multiplied by 100 equals the girdle thickness percent. The diamond will, therefore, fall in one of the following ranges: Extremely thin: When a girdle is extremely thin, it might be vulnerable to chipping or even breaking.
What is a good size oval diamond?
1.35-1.50
What is the best ratio for oval diamond? Most people say the ideal length-to-width ratio of an oval is 1.35-1.50. Diamonds that fall within this range will not be too round, or too pointy! The lower the ratio, the plumper the oval.
How is the thickness of a diamond determined?
Diamond Girdle Thickness And Why It Is Important. A diamond’s outermost edge is also known as the girdle. Its thickness is measured as a percentage of the diameter (e.g. thin = 1.0%, medium = 3.0%, thick = 4.0% etc…) or quoted as words (such as Thick or Thin).
What does it mean when a diamond girdle is very thick?
Very thick: A very thick girdle means a good gemstone proportion. Extremely thick: With an extremely thick girdle as such, your diamond might seem smaller than it actually is, since more depth is taken up by the girdle.
What does the rough edge of a diamond look like?
The rough girdle is often referred to a ‘bearded girdle’ since it looks a lot like a man’s beard. Having a polished girdle implies that the entire outer edge of the diamond is polished into a single and clear facet. This process makes it possible for you to see right through the diamond.
What does the shape of a diamond mean?
Diamonds are renowned for their ability to transmit light and sparkle so intensely. We often think of a diamond’s cut as shape (round, heart, oval, marquise, pear), but what diamond cut actually does mean how well a diamond’s facets interact with light.